diff --git a/packages/wyatt_ui_components/example/lib/component_theme.dart b/packages/wyatt_ui_components/example/lib/component_theme.dart
new file mode 100644
index 00000000..1cf944bf
--- /dev/null
+++ b/packages/wyatt_ui_components/example/lib/component_theme.dart
@@ -0,0 +1,14 @@
+import 'package:wyatt_ui_components/wyatt_wyatt_ui_components.dart';
+import 'package:wyatt_ui_components_example/components/custom_app_bar.dart';
+import 'package:wyatt_ui_components_example/components/custom_bottom_bar.dart';
+import 'package:wyatt_ui_components_example/components/custom_error_widget.dart';
+import 'package:wyatt_ui_components_example/components/custom_loading_widget.dart';
+
+class AppThemeComponent {
+  static ComponentThemeData get components => const ComponentThemeData.raw(
+        appBar: CustomAppBar(),
+        bottomNavigationBar: CustomBottomNavigationBar(),
+        errorWidget: CustomErrorWidget(),
+        loadingWidget: CustomLoadingWidget(),
+      );
+}
diff --git a/packages/wyatt_ui_components/example/lib/components/custom_app_bar.dart b/packages/wyatt_ui_components/example/lib/components/custom_app_bar.dart
new file mode 100644
index 00000000..8bac84a7
--- /dev/null
+++ b/packages/wyatt_ui_components/example/lib/components/custom_app_bar.dart
@@ -0,0 +1,16 @@
+import 'package:flutter/material.dart';
+import 'package:wyatt_ui_components/wyatt_wyatt_ui_components.dart';
+
+class CustomAppBar extends AppBarComponent {
+  const CustomAppBar({super.title, super.key});
+
+  @override
+  Widget build(BuildContext context) => AppBar(
+        title: Text(super.title ?? ''),
+      );
+
+  @override
+  AppBarComponent configure({String? title}) => CustomAppBar(
+        title: title ?? this.title,
+      );
+}
diff --git a/packages/wyatt_ui_components/example/lib/components/custom_bottom_bar.dart b/packages/wyatt_ui_components/example/lib/components/custom_bottom_bar.dart
new file mode 100644
index 00000000..d3c13033
--- /dev/null
+++ b/packages/wyatt_ui_components/example/lib/components/custom_bottom_bar.dart
@@ -0,0 +1,40 @@
+import 'package:flutter/material.dart';
+import 'package:wyatt_ui_components/wyatt_wyatt_ui_components.dart';
+
+class CustomBottomNavigationBar extends BottomNavigationBarComponent {
+  const CustomBottomNavigationBar({
+    super.currentIndex,
+    super.onTap,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) => BottomNavigationBar(
+        currentIndex: currentIndex,
+        onTap: (index) => super.onTap?.call(context, index),
+        items: const [
+          BottomNavigationBarItem(
+            label: 'Icon 1',
+            icon: Icon(
+              Icons.nearby_off,
+            ),
+          ),
+          BottomNavigationBarItem(
+            label: 'Icon 2',
+            icon: Icon(
+              Icons.dangerous,
+            ),
+          ),
+        ],
+      );
+
+  @override
+  CustomBottomNavigationBar configure({
+    void Function(BuildContext, int)? onTap,
+    int currentIndex = 0,
+  }) =>
+      CustomBottomNavigationBar(
+        onTap: onTap ?? this.onTap,
+        currentIndex: currentIndex,
+      );
+}
diff --git a/packages/wyatt_ui_components/example/lib/components/custom_error_widget.dart b/packages/wyatt_ui_components/example/lib/components/custom_error_widget.dart
new file mode 100644
index 00000000..8b2a9b5a
--- /dev/null
+++ b/packages/wyatt_ui_components/example/lib/components/custom_error_widget.dart
@@ -0,0 +1,16 @@
+import 'package:flutter/material.dart';
+import 'package:wyatt_ui_components/wyatt_wyatt_ui_components.dart';
+
+class CustomErrorWidget extends ErrorWidgetComponent {
+  const CustomErrorWidget({super.error, super.key});
+
+  @override
+  Widget build(BuildContext context) => ColoredBox(
+        color: Colors.red,
+        child: Center(child: Text(error ?? 'Error')),
+      );
+
+  @override
+  ErrorWidgetComponent configure({String? error}) =>
+      CustomErrorWidget(error: error ?? this.error);
+}
diff --git a/packages/wyatt_ui_components/example/lib/components/custom_loading_widget.dart b/packages/wyatt_ui_components/example/lib/components/custom_loading_widget.dart
new file mode 100644
index 00000000..912312fe
--- /dev/null
+++ b/packages/wyatt_ui_components/example/lib/components/custom_loading_widget.dart
@@ -0,0 +1,18 @@
+import 'package:flutter/material.dart';
+import 'package:wyatt_ui_components/wyatt_wyatt_ui_components.dart';
+
+class CustomLoadingWidget extends LoadingWidgetComponent {
+  const CustomLoadingWidget({super.color, super.key});
+
+  @override
+  Widget build(BuildContext context) => Center(
+        child: CircularProgressIndicator(
+          color: color,
+        ),
+      );
+
+  @override
+  CustomLoadingWidget configure({Color? color}) => CustomLoadingWidget(
+        color: color ?? this.color,
+      );
+}
diff --git a/packages/wyatt_ui_components/example/lib/main.dart b/packages/wyatt_ui_components/example/lib/main.dart
index 840b81d6..673d614a 100644
--- a/packages/wyatt_ui_components/example/lib/main.dart
+++ b/packages/wyatt_ui_components/example/lib/main.dart
@@ -15,6 +15,8 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 import 'package:flutter/material.dart';
+import 'package:wyatt_ui_components/wyatt_wyatt_ui_components.dart';
+import 'package:wyatt_ui_components_example/component_theme.dart';
 
 void main() {
   runApp(const MyApp());
@@ -26,17 +28,45 @@ class MyApp extends StatelessWidget {
   // This widget is the root of your application.
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      title: 'Wyatt Ui Components Example',
-      theme: ThemeData(
-        primarySwatch: Colors.blue,
-      ),
-      home: Scaffold(
-        appBar: AppBar(
-          title: const Text('Wyatt Ui Components Example'),
+    return ComponentTheme(
+      componentThemeWidget: AppThemeComponent.components,
+      child: MaterialApp(
+        title: 'Wyatt Ui Components Example',
+        theme: ThemeData(
+          primarySwatch: Colors.blue,
+        ),
+        home: const Scaffold(
+          body: Home(),
         ),
-        body: const Center(child: Text('')),
       ),
     );
   }
 }
+
+class Home extends StatelessWidget {
+  const Home({super.key});
+
+  @override
+  Widget build(BuildContext context) => Scaffold(
+        appBar: PreferredSize(
+          preferredSize: const Size.fromHeight(60),
+          child: context.components.appBar.configure(title: 'Example title'),
+        ),
+        body: Column(
+          children: [
+            Expanded(
+              child: context.components.errorWidget
+                  .configure(error: 'Example erreur'),
+            ),
+            const SizedBox(
+              height: 10,
+            ),
+            Expanded(
+              child: context.components.loadingWidget
+                  .configure(color: Colors.green),
+            ),
+          ],
+        ),
+        bottomNavigationBar: context.components.bottomNavigationBar,
+      );
+}
diff --git a/packages/wyatt_ui_components/lib/src/domain/entities/component.dart b/packages/wyatt_ui_components/lib/src/domain/entities/component.dart
new file mode 100644
index 00000000..04e60ebc
--- /dev/null
+++ b/packages/wyatt_ui_components/lib/src/domain/entities/component.dart
@@ -0,0 +1,7 @@
+import 'package:flutter/material.dart';
+
+abstract class Component extends StatelessWidget {
+  const Component({super.key});
+
+  Component configure();
+}
diff --git a/packages/wyatt_ui_components/lib/src/domain/entities/components.dart b/packages/wyatt_ui_components/lib/src/domain/entities/components.dart
index 496f50ce..be6d79e2 100644
--- a/packages/wyatt_ui_components/lib/src/domain/entities/components.dart
+++ b/packages/wyatt_ui_components/lib/src/domain/entities/components.dart
@@ -15,19 +15,17 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 import 'package:flutter/material.dart';
+import 'package:wyatt_ui_components/src/domain/entities/component.dart';
 
-abstract class AppBarComponent extends PreferredSize {
+abstract class AppBarComponent extends Component {
   final String? title;
-  const AppBarComponent({this.title, super.key})
-      : super(
-          preferredSize: const Size.fromHeight(60),
-          child: const SizedBox.shrink(),
-        );
+  const AppBarComponent({this.title, super.key});
 
+  @override
   AppBarComponent configure({String? title});
 }
 
-abstract class BottomNavigationBarComponent extends StatelessWidget {
+abstract class BottomNavigationBarComponent extends Component {
   final int currentIndex;
   final void Function(BuildContext, int)? onTap;
   const BottomNavigationBarComponent({
@@ -36,8 +34,25 @@ abstract class BottomNavigationBarComponent extends StatelessWidget {
     super.key,
   });
 
+  @override
   BottomNavigationBarComponent configure({
     void Function(BuildContext, int)? onTap,
     int currentIndex = 0,
   });
 }
+
+abstract class ErrorWidgetComponent extends Component {
+  final String? error;
+  const ErrorWidgetComponent({required this.error, super.key});
+
+  @override
+  ErrorWidgetComponent configure({String? error});
+}
+
+abstract class LoadingWidgetComponent extends Component {
+  final Color? color;
+  const LoadingWidgetComponent({required this.color, super.key});
+
+  @override
+  LoadingWidgetComponent configure({Color? color});
+}
diff --git a/packages/wyatt_ui_components/lib/src/features/component_theme_data.dart b/packages/wyatt_ui_components/lib/src/features/component_theme_data.dart
index 0e6ddf34..66540540 100644
--- a/packages/wyatt_ui_components/lib/src/features/component_theme_data.dart
+++ b/packages/wyatt_ui_components/lib/src/features/component_theme_data.dart
@@ -19,9 +19,13 @@ import 'package:wyatt_ui_components/src/domain/entities/components.dart';
 class ComponentThemeData {
   final AppBarComponent appBar;
   final BottomNavigationBarComponent bottomNavigationBar;
+  final ErrorWidgetComponent errorWidget;
+  final LoadingWidgetComponent loadingWidget;
 
   const ComponentThemeData.raw({
     required this.appBar,
     required this.bottomNavigationBar,
+    required this.errorWidget,
+    required this.loadingWidget,
   });
 }